Municipal signal apparatus



(No Model.)

B. J. NOYES. MUNICIPAL SIGNAL APPARATUS.

No. 447,061. Patented Feb. 24,1891.

LIIIIIIMIIHUQ UNITE STATES PATENT OFFICE.

BERNIOE J. NOYES, OF BOSTON, MASSACHUSETTS.

MUNICIPAL SIGNAL APPARATUS.

SPECIFICATION forming part of Letters Patent No. 447,061, dated February24, 1891.

' Application filed Septemherl4, 1888. Serial No. 285,355. (NomodeL) ToaZZ whom it may concern.

Be it known that I, BERNICE J. NoYEs, of Boston, county of Suffolk,State of Massachusetts, have invented an Improvement in Municipal SignalApparatus, of which the followin g description, in connection with theaccompanying drawing, is a specification, like .letters on the drawingrepresenting like parts.

In another application filed by me concurrently with this, Serial No.285,354, amunicipal telegraph system is shown adapted for police-signalpurposes, wherein several substations and a central station areconnected by an electric circuit. In said application the differentsignals were transmitted over a metallic circuit, and an instrumentcapable of producing or transmitting impulses or currents of a differentcharacter was included in another circuit, preferably formed by groundtaps or branches between the metallic circuit. The instrument thereinshown was What is commonly known as a magnetoelectric generator.

In this my present invention the signals are transmitted over a metalliccircuit, and induced impulses are employed to operate or call intooperation the audible alarm or indicating signal. The induced impulsesare produced by induction-coils, which are included in local-batterycircuits including a circuitchanging device, also the secondary coilsare included in the main circuit. A polarized receiving-instrument islocated at the central station, which is responsive to the said inducedimpulses. The code-signal transmitter in the box at the sub-station maybe any usual or suitable form of multiple signal transmitter, the formherein shown being substantially that contained in United States PatentNo. 320,032, dated June 16, 1885, it comprising several signal-wheels ona shaft, a series of pens, one for each signal-wheel, and aselecting-cylinder constructed and arranged to press one or another peninto engagement with the signal-wheels, a pointer for rotating theselecting-cylinder, and a dial for the boxes over which the pointermoves. Telephones are provided arranged in ground-taps of the maincircuit, which will be employed in usual manner.

The drawing shows in diagram a multiplesignal transmitter,induction-coil, and telephonicinstruments,and the circnitsat thesubstation, and also the signal-receiving instrum ent, polarized instrument,and audible alarm or indicating signahand the telephonicinstrumentsand circuits at the central oflice or main station. At the sub-stationsmultiple-signal transmitters are employed of any well-known formorconstruction,themultiple-signaltransmit-ter herein shown b eing'ot'the kind shown in patent referred to, it comprising a series ofsignal-wheels (L a a a a series of pens b b 1) b and a selectingcylinder and pointer. (Not shown.) The multiple-signal transmitter isincluded in a main electric circuit A, which includes the mainbatteryA', and at themain or central station a receiving-relay c isemployed, the armature of which controls a local circuit 0 containing abattery 0 an a register R. The signal-wheels a a a a are so formed as toeffect the transmission of different signals in conjunction with the boxnumber, and the rcceiver'R is designed to receive all the signalstransmitted.

In'United States Patent No. 359,687, dated 'March 22, 1887, heretoforegranted to me, a

municipal telegraph system is shown comprising a main or central stationand several sub-stations connected by an electric circuit, thesub-stations containing signal-transmitters, and the main stationcontaining a'signal-receiver, and also an audible alarm or indicatingsignal, which is responsive to some of the signals transmitted, but notothers.

In accordance with this invention an audible alarm or indicating signalis provided at the main or central station, which is responsive to someof the signals transmitted, and to eii'ect this result an induction-coilB is placed at the sub-station, the primary coil 19 of which is includedin a local circuit 19' containing the battery 19 and the circuit-wheel aand pen while the secondary coil 5 is included in the main electriccircuit.

For simplicity of operation I have placed the circuit-wheel a upon thesame shaft with the wheels to a, &c., but insulated therefrom, and Ihave secured the pen Z7 to the same block to which the pens b b, &c.,are attached, and the contact portions of the circuit-wheel are arrangedwith relation with the contact portions of the other wheels, so as notto interfere in operation, but to operate in conjunction with some ofthe wheels, so thatinduced impulses may be transmitted in advance of orimmediately after the signals with which it is to (to-operate. At thecentral station a polarized receh ing-instrument is employed which isincluded in the main electric circuitand responsive to induced impulses.

As herein shown, the polarized instrument is a relay, as R, the armatureof which controls the electro-magnet m included in aloealbattery circuitm, and the armature of said electro-magnet 'min turn controls the drop min a local-battery circuit m", which ineludes a bell.

It. is obvious that the armature of the relay R may be provided with abell-hammer and directly tap the bell.

l have shown the circuit-changer I) as formed with four contact portionsto transmit four induced impulses, yet any other number of contactportions may be provided.

At the main and sub stations ground taps or branches a lead from themain circuit in which the telephonic instruments 2- are included in anyusual or suitable manner.-

I claim 1. In a municipal telegraph system, a main station and severalsub-stations connected by an electric circuit, multiple-signaltransmitters at the sub-stations, and signal-receivers at the mainstation, combined with an inductorium one of the coils of which isincluded in the main signaling-cir uit and the other coil in abattery-circuit, a circuit-changer for said battery-circuit, whichoperates auto matically in conjunction with some signals and not others,and a polarized receiving-instrument at the main or central stationresponsive to the induced impulses, substantially as described.

2. In a municipal telegraph systcm,a main station and severalsub-stations connected by an electric circuit, a m ultiple-si'gn altransmitter at the sub-stations comprising a series of signal-wheels anda series of pens, and a signal-recei vi ng apparatus at the main stationresponsive to the changes in the condition of the main circuit producedby said multiplesignal transmitter, combined with an inductorium one ofthe coils of which is included in a main circuit and the other in alocal-battery circuit, a circuit-wheel a fixed to and insulated from therest of the shaft carrying the signal-wheels, the pen 61 and thepolarized receiving-instrument at the main station responsive to theinduced impulses, substantially as described.

In a municipal telegraph systenna main station and several sub-stationsconnected by an electric circuit, a multiple-signal transmitter at thesub-station, and a signal-receiving apparatus at the main stationresponsive to the changes in the condition of the circuit produced bysaid multiple-signal transmitter, combined with an inductorium at eachsubstation, one of the coils of which is included in said circuit andthe other coil in an independent battery-eircuit, a circuit-changer formaking and breaking said independent battery-circuit which is operatedautomatically in conjunction with some signals but not others, and apolarized signal-receiving appa ratus at the main station responsive tothe induced impulses, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

BERNIOE J. NOYES.

Witnesses:

GEO. W. GREGORY, IlowARi) F. EATON.

